/// <summary>
/// Visits the syntax node.
/// </summary>
/// <param name="program">Program</param>
/// <param name="parentNode">Node</param>
/// <param name="isMain">Is main machine</param>
/// <param name="isModel">Is a model</param>
/// <param name="isMonitor">Is a monitor</param>
/// <param name="accMod">Access modifier</param>
/// <param name="inhMod">Inheritance modifier</param>
internal void Visit(IPSharpProgram program, NamespaceDeclaration parentNode, bool isMain,
bool isModel, bool isMonitor, AccessModifier accMod, InheritanceModifier inhMod)
{
var node = new MachineDeclaration(base.TokenStream.Program, isMain, isModel, isMonitor);
node.AccessModifier = accMod;
node.InheritanceModifier = inhMod;
node.MachineKeyword = base.TokenStream.Peek();
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
if (base.TokenStream.Done ||
base.TokenStream.Peek().Type != TokenType.Identifier)
{
throw new ParsingException("Expected machine identifier.",
new List<TokenType>
{
TokenType.Identifier
});
}
base.TokenStream.CurrentMachine = base.TokenStream.Peek().Text;
base.TokenStream.Swap(new Token(base.TokenStream.Peek().TextUnit,
TokenType.MachineIdentifier));
node.Identifier = base.TokenStream.Peek();
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
if (base.TokenStream.Program is PSharpProgram)
{
if (base.TokenStream.Done ||
(base.TokenStream.Peek().Type != TokenType.Colon &&
base.TokenStream.Peek().Type != TokenType.LeftCurlyBracket))
{
throw new ParsingException("Expected \":\" or \"{\".",
new List<TokenType>
{
TokenType.Colon,
TokenType.LeftCurlyBracket
});
}
if (base.TokenStream.Peek().Type == TokenType.Colon)
{
node.ColonToken = base.TokenStream.Peek();
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
if (base.TokenStream.Done ||
base.TokenStream.Peek().Type != TokenType.Identifier)
{
throw new ParsingException("Expected base machine identifier.",
new List<TokenType>
{
TokenType.Identifier
});
}
while (!base.TokenStream.Done &&
base.TokenStream.Peek().Type != TokenType.LeftCurlyBracket)
{
if (base.TokenStream.Peek().Type != TokenType.Identifier &&
base.TokenStream.Peek().Type != TokenType.Dot &&
base.TokenStream.Peek().Type != TokenType.NewLine)
{
throw new ParsingException("Expected base machine identifier.",
new List<TokenType>
{
TokenType.Identifier,
TokenType.Dot
});
}
else
{
node.BaseNameTokens.Add(base.TokenStream.Peek());
}
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
}
}
}
if (base.TokenStream.Done ||
base.TokenStream.Peek().Type != TokenType.LeftCurlyBracket)
{
throw new ParsingException("Expected \"{\".",
new List<TokenType>
{
TokenType.LeftCurlyBracket
});
}
base.TokenStream.Swap(new Token(base.TokenStream.Peek().TextUnit,
TokenType.MachineLeftCurlyBracket));
node.LeftCurlyBracketToken = base.TokenStream.Peek();
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
if (base.TokenStream.Program is PSharpProgram)
{
this.VisitNextPSharpIntraMachineDeclaration(node);
parentNode.MachineDeclarations.Add(node);
}
else
{
this.VisitNextPIntraMachineDeclaration(node);
(program as PProgram).MachineDeclarations.Add(node);
}
if (node.StateDeclarations.Count == 0 && node.BaseNameTokens.Count == 0)
{
throw new ParsingException("A machine must declare at least one state.",
new List<TokenType>());
}
var initialStates = node.StateDeclarations.FindAll(s => s.IsInitial);
if (initialStates.Count == 0 && node.BaseNameTokens.Count == 0)
{
throw new ParsingException("A machine must declare a start state.",
new List<TokenType>());
}
else if (initialStates.Count > 1)
{
throw new ParsingException("A machine can declare only a single start state.",
new List<TokenType>());
}
}
/// <summary>
/// Visits the syntax node.
/// </summary>
/// <param name="program">Program</param>
/// <param name="parentNode">Node</param>
/// <param name="accMod">Access modifier</param>
internal void Visit(IPSharpProgram program, NamespaceDeclaration parentNode, AccessModifier accMod)
{
var node = new EventDeclaration(base.TokenStream.Program);
node.AccessModifier = accMod;
node.EventKeyword = base.TokenStream.Peek();
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
if (base.TokenStream.Done ||
(base.TokenStream.Peek().Type != TokenType.Identifier &&
base.TokenStream.Peek().Type != TokenType.HaltEvent &&
base.TokenStream.Peek().Type != TokenType.DefaultEvent))
{
throw new ParsingException("Expected event identifier.",
new List<TokenType>
{
TokenType.Identifier,
TokenType.HaltEvent,
TokenType.DefaultEvent
});
}
if (base.TokenStream.Peek().Type == TokenType.Identifier)
{
base.TokenStream.Swap(new Token(base.TokenStream.Peek().TextUnit,
TokenType.EventIdentifier));
}
node.Identifier = base.TokenStream.Peek();
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
if (base.TokenStream.Done ||
(base.TokenStream.Peek().Type != TokenType.Assert &&
base.TokenStream.Peek().Type != TokenType.Assume &&
base.TokenStream.Peek().Type != TokenType.Colon &&
base.TokenStream.Peek().Type != TokenType.Semicolon))
{
throw new ParsingException("Expected \":\" or \";\".",
new List<TokenType>
{
TokenType.Assert,
TokenType.Assume,
TokenType.Colon,
TokenType.Semicolon
});
}
if (base.TokenStream.Peek().Type == TokenType.Assert ||
base.TokenStream.Peek().Type == TokenType.Assume)
{
bool isAssert = true;
if (base.TokenStream.Peek().Type == TokenType.Assert)
{
node.AssertKeyword = base.TokenStream.Peek();
}
else
{
node.AssumeKeyword = base.TokenStream.Peek();
isAssert = false;
}
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
if (base.TokenStream.Done ||
base.TokenStream.Peek().Type != TokenType.Identifier)
{
throw new ParsingException("Expected integer.",
new List<TokenType>
{
TokenType.Identifier
});
}
int value;
if (!int.TryParse(base.TokenStream.Peek().TextUnit.Text, out value))
{
throw new ParsingException("Expected integer.",
new List<TokenType>
{
TokenType.Identifier
});
}
if (isAssert)
{
node.AssertValue = value;
}
else
{
node.AssumeValue = value;
}
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
if (base.TokenStream.Done ||
(base.TokenStream.Peek().Type != TokenType.Colon &&
base.TokenStream.Peek().Type != TokenType.Semicolon))
{
throw new ParsingException("Expected \":\" or \";\".",
new List<TokenType>
{
TokenType.Colon,
TokenType.Semicolon
});
}
}
if (base.TokenStream.Peek().Type == TokenType.Colon)
{
node.ColonToken = base.TokenStream.Peek();
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
PBaseType payloadType = null;
new TypeIdentifierVisitor(base.TokenStream).Visit(ref payloadType);
node.PayloadType = payloadType;
}
if (base.TokenStream.Done ||
base.TokenStream.Peek().Type != TokenType.Semicolon)
{
throw new ParsingException("Expected \";\".",
new List<TokenType>
{
TokenType.Semicolon
});
}
node.SemicolonToken = base.TokenStream.Peek();
if (base.TokenStream.Program is PSharpProgram)
{
parentNode.EventDeclarations.Add(node);
}
else
{
(program as PProgram).EventDeclarations.Add(node);
}
}
/// <summary>
/// Visits a namespace declaration.
/// </summary>
private void VisitNamespaceDeclaration()
{
var node = new NamespaceDeclaration(base.TokenStream.Program);
node.NamespaceKeyword = base.TokenStream.Peek();
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
if (base.TokenStream.Done ||
base.TokenStream.Peek().Type != TokenType.Identifier)
{
throw new ParsingException("Expected namespace identifier.",
new List<TokenType>
{
TokenType.Identifier
});
}
while (!base.TokenStream.Done &&
base.TokenStream.Peek().Type != TokenType.LeftCurlyBracket)
{
if (base.TokenStream.Peek().Type != TokenType.Identifier &&
base.TokenStream.Peek().Type != TokenType.Dot &&
base.TokenStream.Peek().Type != TokenType.NewLine)
{
throw new ParsingException("Expected namespace identifier.",
new List<TokenType>
{
TokenType.Identifier,
TokenType.Dot
});
}
else
{
node.IdentifierTokens.Add(base.TokenStream.Peek());
}
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
}
if (base.TokenStream.Done ||
base.TokenStream.Peek().Type != TokenType.LeftCurlyBracket)
{
throw new ParsingException("Expected \"{\".",
new List<TokenType>
{
TokenType.LeftCurlyBracket
});
}
node.LeftCurlyBracketToken = base.TokenStream.Peek();
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
this.VisitNextIntraNamespaceDeclaration(node);
(this.Program as PSharpProgram).NamespaceDeclarations.Add(node);
}
/// <summary>
/// Visits the next intra-namespace declration.
/// </summary>
/// <param name="node">Node</param>
private void VisitNextIntraNamespaceDeclaration(NamespaceDeclaration node)
{
if (base.TokenStream.Done)
{
throw new ParsingException("Expected \"}\".",
new List<TokenType>
{
TokenType.Internal,
TokenType.Public,
TokenType.Abstract,
TokenType.Virtual,
TokenType.EventDecl,
TokenType.MachineDecl,
TokenType.ModelDecl,
TokenType.Monitor,
TokenType.LeftSquareBracket,
TokenType.RightCurlyBracket
});
}
bool fixpoint = false;
var token = base.TokenStream.Peek();
switch (token.Type)
{
case TokenType.WhiteSpace:
case TokenType.Comment:
case TokenType.NewLine:
base.TokenStream.Index++;
break;
case TokenType.CommentLine:
case TokenType.Region:
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
break;
case TokenType.CommentStart:
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
break;
case TokenType.EventDecl:
case TokenType.MachineDecl:
case TokenType.ModelDecl:
case TokenType.Monitor:
case TokenType.Internal:
case TokenType.Public:
case TokenType.Abstract:
case TokenType.Virtual:
this.VisitEventOrMachineDeclaration(node);
base.TokenStream.Index++;
break;
case TokenType.LeftSquareBracket:
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
new AttributeListVisitor(base.TokenStream).Visit();
base.TokenStream.Index++;
break;
case TokenType.RightCurlyBracket:
node.RightCurlyBracketToken = base.TokenStream.Peek();
fixpoint = true;
base.TokenStream.Index++;
break;
case TokenType.Private:
case TokenType.Protected:
throw new ParsingException("Event and machine declarations must be internal or public.",
new List<TokenType>());
default:
throw new ParsingException("Unexpected token.",
new List<TokenType>());
}
if (!fixpoint)
{
this.VisitNextIntraNamespaceDeclaration(node);
}
}
/// <summary>
/// Visits an event or machine declaration.
/// </summary>
/// <param name="parentNode">Node</param>
private void VisitEventOrMachineDeclaration(NamespaceDeclaration parentNode)
{
AccessModifier am = AccessModifier.None;
InheritanceModifier im = InheritanceModifier.None;
while (!base.TokenStream.Done &&
base.TokenStream.Peek().Type != TokenType.EventDecl &&
base.TokenStream.Peek().Type != TokenType.MachineDecl &&
base.TokenStream.Peek().Type != TokenType.ModelDecl &&
base.TokenStream.Peek().Type != TokenType.Monitor)
{
if (am != AccessModifier.None &&
(base.TokenStream.Peek().Type == TokenType.Public ||
base.TokenStream.Peek().Type == TokenType.Private ||
base.TokenStream.Peek().Type == TokenType.Protected ||
base.TokenStream.Peek().Type == TokenType.Internal))
{
throw new ParsingException("More than one protection modifier.",
new List<TokenType>());
}
else if (im != InheritanceModifier.None &&
base.TokenStream.Peek().Type == TokenType.Abstract)
{
throw new ParsingException("Duplicate abstract modifier.",
new List<TokenType>());
}
if (base.TokenStream.Peek().Type == TokenType.Public)
{
am = AccessModifier.Public;
}
else if (base.TokenStream.Peek().Type == TokenType.Private)
{
am = AccessModifier.Private;
}
else if (base.TokenStream.Peek().Type == TokenType.Protected)
{
am = AccessModifier.Protected;
}
else if (base.TokenStream.Peek().Type == TokenType.Internal)
{
am = AccessModifier.Internal;
}
else if (base.TokenStream.Peek().Type == TokenType.Abstract)
{
im = InheritanceModifier.Abstract;
}
base.TokenStream.Index++;
base.TokenStream.SkipWhiteSpaceAndCommentTokens();
}
if (base.TokenStream.Done ||
(base.TokenStream.Peek().Type != TokenType.EventDecl &&
base.TokenStream.Peek().Type != TokenType.MachineDecl &&
base.TokenStream.Peek().Type != TokenType.ModelDecl &&
base.TokenStream.Peek().Type != TokenType.Monitor))
{
throw new ParsingException("Expected event, machine, model or monitor declaration.",
new List<TokenType>
{
TokenType.EventDecl,
TokenType.MachineDecl,
TokenType.ModelDecl,
TokenType.Monitor
});
}
if (base.TokenStream.Peek().Type == TokenType.EventDecl)
{
if (am == AccessModifier.Private)
{
throw new ParsingException("An event cannot be private.",
new List<TokenType>());
}
else if (am == AccessModifier.Protected)
{
throw new ParsingException("An event cannot be protected.",
new List<TokenType>());
}
if (im == InheritanceModifier.Abstract)
{
throw new ParsingException("An event cannot be abstract.",
new List<TokenType>());
}
new EventDeclarationVisitor(base.TokenStream).Visit(null, parentNode, am);
}
else if (base.TokenStream.Peek().Type == TokenType.MachineDecl ||
base.TokenStream.Peek().Type == TokenType.ModelDecl)
{
if (am == AccessModifier.Private)
{
throw new ParsingException("A machine cannot be private.",
new List<TokenType>());
}
else if (am == AccessModifier.Protected)
{
throw new ParsingException("A machine cannot be protected.",
new List<TokenType>());
}
if (base.TokenStream.Peek().Type == TokenType.MachineDecl)
{
new MachineDeclarationVisitor(base.TokenStream).Visit(null, parentNode,
false, false, false, am, im);
}
else if (base.TokenStream.Peek().Type == TokenType.ModelDecl)
{
new MachineDeclarationVisitor(base.TokenStream).Visit(null, parentNode,
false, true, false, am, im);
}
}
else if (base.TokenStream.Peek().Type == TokenType.Monitor)
{
if (am == AccessModifier.Private)
{
throw new ParsingException("A monitor cannot be private.",
new List<TokenType>());
}
else if (am == AccessModifier.Protected)
{
throw new ParsingException("A monitor cannot be protected.",
new List<TokenType>());
}
new MachineDeclarationVisitor(base.TokenStream).Visit(null, parentNode,
false, false, true, am, im);
}
}